Newly synthesized proteins destined for the lysosome bind a specific receptor in the -------- and are released from their receptor in the -------.
ANSWER :-
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Newly synthesized proteins destined for the lysosome bind a specific receptor in the -------- and are...
describe how an enzyme that is destined for the lysosome gets synthesized and transported
Describe the main mechanisms by which newly synthesized proteins are transported from the cytosol to mitochondria and outline the importance of signal sequences and protein processing in the localization of proteins within the different compartments of the mitochondrion.
GTP-coupled receptors bind and interact with intracellular proteins. These proteins, in turn, each have a specific response in cell signaling. Place the description on the correct location of GPCR signaling. 1st attempt See Hint Plasma membrane GDP GDP GTP GDP leaves and exchanges with GTP, leading to subunit dissociation Ligand occupancy of receptor causes a twist in the transmembran e loops, opening the GTP/GDP pocket of the alpha subunit Inactive heterotrimeric G protein bound to GDP Beta/gamma subunits remain as...
Most steroid hormone receptors are transcription _______ proteins. The receptor steroid complexes bind to the _________ sequences located in 5’-upstream regions of the target genes, to up-regulate the gene activities. Select one: a. activator;;;;;;promoter b. repressor;;;;;;promoter c. activator;;;;;;enhancer d. repressor;;;;;;enhancer e. None of these
3. Think about what G-proteins look like before they bind to a G-protein-coupled receptor. These G-proteins would have...circle your answer GTP attached to them OR GDP attached to them (a) Think about what G-proteins look like after they bind to a G-protein-coupled receptor. These G-proteins would have...circle your answer GTP attached to them OR GDP attached to them (b) A molecule of GTP contains how many phosphate groups? (c) Think about a G-protein that has a GTP attached to it....
The ability of a single signal molecule to bind to a receptor and trigger several signal transduction pathways simultaneously: a. Is common to all plasma membrane receptor proteins b. Does not occur in animals c. Is a key feature of the receptor tyrosine-kinase system d. Uses a diacylglycerol-mediated pathway
While investigating the function of a specific growth factor receptor gene from humans, researchers found that two types of proteins are synthesized from this gene. A larger protein containing a membrane-spanning domain recognizes growth factors at the cell surface, stimulating a specific downstream signaling pathway. In contrast, a related, smaller protein is secreted from the cell and binds available growth factor circulating in the blood, thus inhibiting the downstream signaling pathway. Speculate on how the cell synthesizes these disparate proteins.
The newly synthesized weak acid was designed for use in created buffers hat protect proteins during purification. You are told to make 0.2 Liters of a 25mM solution of the weak acid with a pH of 8.5. Determine the moles of each buffering species required in the solution? (hint: you only use one pKa value)
Phosphatases are a family of enzymes that remove phosphate groups from specific proteins; these phosphate groups had been added to the proteins by protein kinases. Vanadate is an inhibitor of phosphatases in eukaryotic cells. What effect would vanadate have on the response of cells to signals received by receptor kinases? A) The signal would still bind the receptor, so there would be no effect. B) The response of the cell would last longer than it normally would. C) The response...
Three membrane receptor proteins bind tightly to a hormone. The free hormone concentrations and their corresponding fractions of hormone binding, Y, are given in the table. [Hormone), nM Protein 1 (Y) Protein 2 (Y) Protein 3 (Y)| 0.20 0.048 0.29 0.17 0.50 0.11 0.50 0.33 1.0 0.20 0.67 0.50 0.50 0.89 0.80 0.71 0.95 0.91 0.83 0.97 0.93 0.99 0.98 0.95 50 Select the K, for hormone binding by protein 2. 0.50 nM 0.99 nM O 0.20 nM 50 nM...